Why are “life at war” and “overheard over s. e. asia” considered to be protest poems?
a. they moralize about the evils of war.
b. they make use of contrasting images to challenge the natural order of things.
c. they emphasize the futility of war when humans are capable of much more.
d. they shock people by providing a terrifying view of war rather than a heroic one.

Option D. They shock people by providing a terrifying view of war rather than a heroic one.

Explanation:

Both the poems are written by the same person, Denise Levertov, a British poet. She seems to be too concerned about the ravages of war, the destruction and distress it results in.  

Both the poems are about the tragedy of war that struck Vietnam. She seems to be much perturbed at the scene witnessed in Vietnam.  While the second poem talks about white phosphorus seeking the bones, the first talks about the burning Vietnamese flesh.

Thus, both the poems portray the horrors of war.

showing or suffering from nervousness, fear, or a lack of confidence

what lesson are you referencing?